diff --git a/Cargo.lock b/Cargo.lock
index 1f8ab87..bf2b38f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -346,6 +346,7 @@ dependencies = [
  "bytes 1.11.1",
  "chrono",
  "clap",
+ "cron",
  "dashmap",
  "deunicode",
  "email_address",
@@ -875,6 +876,17 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "790eea4361631c5e7d22598ecd5723ff611904e3344ce8720784c93e3d83d40b"
 
+[[package]]
+name = "cron"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5877d3fbf742507b66bc2a1945106bd30dd8504019d596901ddd012a4dd01740"
+dependencies = [
+ "chrono",
+ "once_cell",
+ "winnow 0.6.26",
+]
+
 [[package]]
 name = "crossbeam-channel"
 version = "0.5.15"
@@ -5611,6 +5623,15 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
 
+[[package]]
+name = "winnow"
+version = "0.6.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e90edd2ac1aa278a5c4599b1d89cf03074b610800f866d4026dc199d7929a28"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "winnow"
 version = "0.7.15"
diff --git a/crates/admin/src/meta.rs b/crates/admin/src/meta.rs
index 9992a07..ac9eb12 100644
--- a/crates/admin/src/meta.rs
+++ b/crates/admin/src/meta.rs
@@ -261,6 +261,7 @@ impl From<AccountV3> for AccountModel {
             imap_quota_window: None,
             imap_quota_bytes: None,
             auto_download_new_mailboxes: None,
+            download_schedule: None,
         }
     }
 }
diff --git a/crates/core/Cargo.toml b/crates/core/Cargo.toml
index 4ae44ba..83bfc9c 100644
--- a/crates/core/Cargo.toml
+++ b/crates/core/Cargo.toml
@@ -69,5 +69,6 @@ tokio-util.workspace = true
 whichlang = "0.1.1"
 deunicode = "1.6.2"
 scopeguard = "1.2.0"
+cron = "0.15"
 quick-xml = { version = "0.40.0", features = ["serialize"] }
 hickory-resolver = "0.26.0-alpha.1"
diff --git a/crates/core/src/account/migration.rs b/crates/core/src/account/migration.rs
index 23729a5..e0250c7 100644
--- a/crates/core/src/account/migration.rs
+++ b/crates/core/src/account/migration.rs
@@ -95,6 +95,7 @@ pub struct Account {
     pub imap_quota_bytes: Option<u64>,
     pub imap_quota_window: Option<QuotaWindow>,
     pub auto_download_new_mailboxes: Option<bool>,
+    pub download_schedule: Option<String>,
 }
 
 impl MemDbModel for Account {
@@ -133,6 +134,7 @@ impl Account {
             auto_download_new_mailboxes: request.auto_download_new_mailboxes,
             imap_quota_bytes: request.imap_quota_bytes,
             imap_quota_window: request.imap_quota_window,
+            download_schedule: request.download_schedule,
         })
     }
 
@@ -439,6 +441,12 @@ impl Account {
         if let Some(auto_download_new_mailboxes) = request.auto_download_new_mailboxes {
             new.auto_download_new_mailboxes = Some(auto_download_new_mailboxes);
         }
+        if let Some(download_schedule) = request.download_schedule {
+            new.download_schedule = Some(download_schedule);
+        }
+        if request.clear_download_schedule == Some(true) {
+            new.download_schedule = None;
+        }
         new.updated_at = utc_now!();
         Ok(new)
     }
diff --git a/crates/core/src/account/payload.rs b/crates/core/src/account/payload.rs
index 93eec5e..34256d1 100644
--- a/crates/core/src/account/payload.rs
+++ b/crates/core/src/account/payload.rs
@@ -16,6 +16,8 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+use std::str::FromStr;
+
 use crate::account::entity::ImapConfig;
 use crate::account::migration::{AccountModel, AccountType, QuotaWindow};
 use crate::account::since::{DateSince, RelativeDate};
@@ -54,6 +56,7 @@ pub struct AccountCreateRequest {
     pub imap_quota_bytes: Option<u64>,
     pub imap_quota_window: Option<QuotaWindow>,
     pub auto_download_new_mailboxes: Option<bool>,
+    pub download_schedule: Option<String>,
 }
 
 impl AccountCreateRequest {
@@ -92,12 +95,15 @@ impl AccountCreateRequest {
                         ))
                     }
                 }
-                if self.download_interval_min.is_none() {
+                if self.download_interval_min.is_none() && self.download_schedule.is_none() {
                     return Err(raise_error!(
-                        "`sync_interval_min` is required for IMAP account type".into(),
+                        "`sync_interval_min` or `download_schedule` is required for IMAP account type".into(),
                         ErrorCode::InvalidParameter
                     ));
                 }
+                if let Some(ref schedule) = self.download_schedule {
+                    validate_cron_expression(schedule)?;
+                }
             }
             AccountType::NoSync => {}
         }
@@ -178,6 +184,8 @@ pub struct AccountUpdateRequest {
     pub imap_quota_bytes: Option<u64>,
     pub imap_quota_window: Option<QuotaWindow>,
     pub auto_download_new_mailboxes: Option<bool>,
+    pub download_schedule: Option<String>,
+    pub clear_download_schedule: Option<bool>,
 }
 
 impl AccountUpdateRequest {
@@ -230,11 +238,36 @@ impl AccountUpdateRequest {
                 ));
                 }
             }
+            if self.clear_download_schedule == Some(true) && self.download_schedule.is_some() {
+                return Err(raise_error!(
+                    "clear_download_schedule cannot be combined with download_schedule".into(),
+                    ErrorCode::InvalidParameter
+                ));
+            }
+            if let Some(ref schedule) = self.download_schedule {
+                validate_cron_expression(schedule)?;
+            }
         }
         Ok(())
     }
 }
 
+fn validate_cron_expression(expr: &str) -> BichonResult<()> {
+    if expr.trim().is_empty() {
+        return Err(raise_error!(
+            "download_schedule must not be empty".into(),
+            ErrorCode::InvalidParameter
+        ));
+    }
+    cron::Schedule::from_str(expr).map_err(|e| {
+        raise_error!(
+            format!("Invalid cron expression '{}': {}", expr, e),
+            ErrorCode::InvalidParameter
+        )
+    })?;
+    Ok(())
+}
+
 #[derive(Clone, Debug, Default, Eq, PartialEq, Deserialize, Serialize)]
 #[cfg_attr(feature = "web-api", derive(poem_openapi::Object))]
 
@@ -253,3 +286,34 @@ pub fn filter_accessible_accounts<'a>(
         .cloned()
         .collect()
 }
+
+#[cfg(test)]
+mod test {
+    use super::validate_cron_expression;
+
+    #[test]
+    fn valid_cron_expressions() {
+        assert!(validate_cron_expression("0 0 0 * * *").is_ok()); // daily at midnight
+        assert!(validate_cron_expression("0 */5 * * * *").is_ok()); // every 5 minutes
+        assert!(validate_cron_expression("0 0 12 * * 1-5").is_ok()); // weekdays at noon
+        assert!(validate_cron_expression("0 30 4 1 * *").is_ok()); // 1st of month at 04:30
+        assert!(validate_cron_expression("0 0 * * * *").is_ok()); // every hour
+    }
+
+    #[test]
+    fn invalid_cron_expression_too_few_fields() {
+        assert!(validate_cron_expression("0 0 * *").is_err());
+        assert!(validate_cron_expression("* * * * *").is_err()); // 5 fields, needs seconds
+    }
+
+    #[test]
+    fn invalid_cron_expression_empty() {
+        assert!(validate_cron_expression("").is_err());
+        assert!(validate_cron_expression("   ").is_err());
+    }
+
+    #[test]
+    fn invalid_cron_expression_garbage() {
+        assert!(validate_cron_expression("not a cron").is_err());
+    }
+}
diff --git a/crates/core/src/account/view.rs b/crates/core/src/account/view.rs
index b594766..6f9e34f 100644
--- a/crates/core/src/account/view.rs
+++ b/crates/core/src/account/view.rs
@@ -57,6 +57,7 @@ pub struct AccountResp {
     pub imap_quota_bytes: Option<u64>,
     pub imap_quota_window: Option<QuotaWindow>,
     pub auto_download_new_mailboxes: Option<bool>,
+    pub download_schedule: Option<String>,
 }
 
 impl AccountResp {
@@ -93,6 +94,7 @@ impl AccountResp {
             imap_quota_bytes: account.imap_quota_bytes,
             imap_quota_window: account.imap_quota_window,
             auto_download_new_mailboxes: account.auto_download_new_mailboxes,
+            download_schedule: account.download_schedule,
         }
     }
 }
diff --git a/crates/core/src/cache/imap/download/download_type.rs b/crates/core/src/cache/imap/download/download_type.rs
index 5327a27..2c27d73 100644
--- a/crates/core/src/cache/imap/download/download_type.rs
+++ b/crates/core/src/cache/imap/download/download_type.rs
@@ -16,6 +16,11 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+use std::str::FromStr;
+
+use chrono::{DateTime, Local, TimeZone, Utc};
+use cron::Schedule;
+
 use crate::{
     utc_now,
     {
@@ -48,11 +53,20 @@ pub async fn decide_next_download_task(
 
     let should_start = match trigger_type {
         TriggerType::Manual => true,
-        TriggerType::Scheduled => should_trigger_next_download(
-            state.last_trigger_at,
-            state.last_finished_at.unwrap_or(0),
-            account.download_interval_min.unwrap_or(60),
-        ),
+        TriggerType::Scheduled => {
+            let now = utc_now!();
+            let cooldown_ok = now - state.last_finished_at.unwrap_or(0) > 60 * 1000;
+            if !cooldown_ok {
+                false
+            } else if let Some(ref schedule) = account.download_schedule {
+                should_trigger_scheduled(schedule, state.last_trigger_at)
+            } else {
+                should_trigger_next_download(
+                    state.last_trigger_at,
+                    account.download_interval_min.unwrap_or(60),
+                )
+            }
+        }
     };
 
     if should_start {
@@ -65,9 +79,87 @@ pub async fn decide_next_download_task(
 
 fn should_trigger_next_download(
     last_trigger_at: i64,
-    last_finished_at: i64,
     sync_interval_min: i64,
 ) -> bool {
     let now = utc_now!();
-    now - last_trigger_at > (sync_interval_min * 60 * 1000) && now - last_finished_at > 60 * 1000
+    now - last_trigger_at > (sync_interval_min * 60 * 1000)
+}
+
+fn should_trigger_scheduled(schedule_str: &str, last_trigger_at: i64) -> bool {
+    let schedule = match Schedule::from_str(schedule_str) {
+        Ok(s) => s,
+        Err(e) => {
+            tracing::warn!(
+                "Invalid cron expression '{}', falling back to no trigger: {}",
+                schedule_str,
+                e
+            );
+            return false;
+        }
+    };
+    // last_trigger_at is a UTC millis timestamp; convert to server local time
+    let last_utc = match Utc.timestamp_millis_opt(last_trigger_at) {
+        chrono::LocalResult::Single(dt) => dt,
+        _ => {
+            tracing::warn!("Invalid last_trigger_at timestamp: {}", last_trigger_at);
+            return false;
+        }
+    };
+    let last_dt: DateTime<Local> = last_utc.with_timezone(&Local);
+    let now = Local::now();
+    schedule.after(&last_dt).next().map_or(false, |next| next <= now)
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn cron_every_minute_triggers_after_60s() {
+        // "0 * * * * *" = every minute at second 0. last_trigger 90s ago → should trigger
+        let now = Local::now();
+        let last_trigger = now.timestamp_millis() - 90_000;
+        assert!(should_trigger_scheduled("0 * * * * *", last_trigger));
+    }
+
+    #[test]
+    fn cron_daily_midnight_triggers_when_missed() {
+        // "0 0 0 * * *" = daily at midnight
+        // last_trigger was 25 hours ago → should trigger (we missed midnight)
+        let now = Local::now();
+        let last_trigger = now.timestamp_millis() - 25 * 60 * 60 * 1000;
+        assert!(should_trigger_scheduled("0 0 0 * * *", last_trigger));
+    }
+
+    #[test]
+    fn cron_daily_midnight_no_trigger_if_already_fired() {
+        // "0 0 0 * * *" = daily at midnight
+        // last_trigger was 1 minute ago → should NOT trigger
+        let now = Local::now();
+        let last_trigger = now.timestamp_millis() - 60_000;
+        assert!(!should_trigger_scheduled("0 0 0 * * *", last_trigger));
+    }
+
+    #[test]
+    fn invalid_cron_returns_false() {
+        assert!(!should_trigger_scheduled("invalid cron expression", 0));
+    }
+
+    #[test]
+    fn cron_every_hour_triggers() {
+        // "0 0 * * * *" = every hour at minute 0, second 0
+        // last_trigger was 61 minutes ago → should trigger
+        let now = Local::now();
+        let last_trigger = now.timestamp_millis() - 61 * 60 * 1000;
+        assert!(should_trigger_scheduled("0 0 * * * *", last_trigger));
+    }
+
+    #[test]
+    fn cron_every_hour_no_trigger_if_recent() {
+        // "0 0 * * * *" = every hour at minute 0, second 0
+        // last_trigger was just 1 minute ago → should NOT trigger (except at :00/:01 boundary)
+        let now = Local::now();
+        let last_trigger = now.timestamp_millis() - 60_000;
+        assert!(!should_trigger_scheduled("0 0 * * * *", last_trigger));
+    }
 }
diff --git a/web/src/api/account/api.ts b/web/src/api/account/api.ts
index 3130162..e7bb249 100644
--- a/web/src/api/account/api.ts
+++ b/web/src/api/account/api.ts
@@ -143,6 +143,7 @@ export interface AccountModel {
     imap_quota_window?: QuotaWindow;
     imap_quota_bytes?: number;
     auto_download_new_mailboxes?: boolean;
+    download_schedule?: string;
 }
 
 export const download_state = async (account_id: number) => {
diff --git a/web/src/features/accounts/components/__tests__/schema.test.ts b/web/src/features/accounts/components/__tests__/schema.test.ts
index 50a7293..056595f 100644
--- a/web/src/features/accounts/components/__tests__/schema.test.ts
+++ b/web/src/features/accounts/components/__tests__/schema.test.ts
@@ -213,37 +213,6 @@ describe('Account Form Schema', () => {
     })
   })
 
-  describe('folder_limit field', () => {
-    it('accepts undefined folder_limit', () => {
-      const result = getAccountSchema(false, t).safeParse(validAccountData)
-      expect(result.success).toBe(true)
-    })
-
-    it('accepts null folder_limit', () => {
-      const result = getAccountSchema(false, t).safeParse({
-        ...validAccountData,
-        folder_limit: null,
-      })
-      expect(result.success).toBe(true)
-    })
-
-    it('rejects folder_limit less than 100', () => {
-      const result = getAccountSchema(false, t).safeParse({
-        ...validAccountData,
-        folder_limit: 50,
-      })
-      expect(result.success).toBe(false)
-    })
-
-    it('accepts folder_limit of exactly 100', () => {
-      const result = getAccountSchema(false, t).safeParse({
-        ...validAccountData,
-        folder_limit: 100,
-      })
-      expect(result.success).toBe(true)
-    })
-  })
-
   describe('account_name and login_name fields', () => {
     it('accepts undefined account_name and login_name', () => {
       const result = getAccountSchema(false, t).safeParse(validAccountData)
@@ -266,6 +235,45 @@ describe('Account Form Schema', () => {
       expect(result.success).toBe(true)
     })
   })
+
+  describe('download_schedule field', () => {
+    it('accepts undefined download_schedule', () => {
+      const result = getAccountSchema(false, t).safeParse(validAccountData)
+      expect(result.success).toBe(true)
+    })
+
+    it('accepts valid 6-field cron expression', () => {
+      const result = getAccountSchema(false, t).safeParse({
+        ...validAccountData,
+        download_schedule: '0 0 0 * * *',
+      })
+      expect(result.success).toBe(true)
+    })
+
+    it('accepts cron with */step syntax', () => {
+      const result = getAccountSchema(false, t).safeParse({
+        ...validAccountData,
+        download_schedule: '0 */30 8-17 * * 1-5',
+      })
+      expect(result.success).toBe(true)
+    })
+
+    it('rejects cron with too few fields', () => {
+      const result = getAccountSchema(false, t).safeParse({
+        ...validAccountData,
+        download_schedule: '0 0 *',
+      })
+      expect(result.success).toBe(false)
+    })
+
+    it('accepts empty string cron (treated as not set)', () => {
+      const result = getAccountSchema(false, t).safeParse({
+        ...validAccountData,
+        download_schedule: '',
+      })
+      expect(result.success).toBe(true)
+    })
+  })
 })
 
 describe('Auth Config Schema (password validation)', () => {
diff --git a/web/src/features/accounts/components/account-detail.tsx b/web/src/features/accounts/components/account-detail.tsx
index 11e54a5..918ab11 100644
--- a/web/src/features/accounts/components/account-detail.tsx
+++ b/web/src/features/accounts/components/account-detail.tsx
@@ -133,8 +133,8 @@ export function AccountDetailDrawer({ open, onOpenChange, currentRow }: Props) {
                         )}
                       </div>
                       <div className="flex flex-wrap items-center gap-2">
-                        <span className="text-muted-foreground">{t('accounts.folderLimit')}:</span>
-                        <span>{currentRow.folder_limit ? currentRow.folder_limit : t('accounts.notAvailable')}</span>
+                        <span className="text-muted-foreground">{t('accounts.downloadSchedule')}:</span>
+                        <span>{currentRow.download_schedule || t('accounts.notAvailable')}</span>
                       </div>
                     </div>
                   </CardContent>
diff --git a/web/src/features/accounts/components/action-dialog.tsx b/web/src/features/accounts/components/action-dialog.tsx
index cdb6296..ac7ef2f 100644
--- a/web/src/features/accounts/components/action-dialog.tsx
+++ b/web/src/features/accounts/components/action-dialog.tsx
@@ -49,7 +49,7 @@ export type Steps = [...Step[]];
 const getSteps = (t: (key: string) => string): Steps => [
   { id: "step-1", name: t('accounts.steps.emailAddress'), fields: ["email", "account_name"] },
   { id: "step-2", name: t('accounts.steps.imap'), fields: ["imap", "use_dangerous", "login_name"] },
-  { id: "step-3", name: t('accounts.steps.syncPreferences'), fields: ["enabled", "date_since", "date_before", "folder_limit", "download_interval_min", "download_batch_size", "auto_download_new_mailboxes"] },
+  { id: "step-3", name: t('accounts.steps.syncPreferences'), fields: ["enabled", "date_since", "date_before", "download_interval_min", "download_batch_size", "auto_download_new_mailboxes", "download_schedule"] },
   { id: "step-4", name: t('accounts.steps.summary'), fields: [] },
 ];
 
@@ -79,10 +79,10 @@ const defaultValues: Account = {
   use_dangerous: false,
   date_since: undefined,
   date_before: undefined,
-  folder_limit: undefined,
   download_interval_min: 60,
   download_batch_size: 30,
   auto_download_new_mailboxes: true,
+  download_schedule: undefined,
 };
 
 const emptyImap: ImapConfig = {
@@ -109,10 +109,10 @@ const mapCurrentRowToFormValues = (currentRow: AccountModel): Account => {
     use_dangerous: currentRow.use_dangerous,
     date_since: currentRow.date_since ?? undefined,
     date_before: currentRow.date_before ?? undefined,
-    folder_limit: currentRow.folder_limit ?? undefined,
     download_interval_min: currentRow.download_interval_min ?? 60,
     download_batch_size: currentRow.download_batch_size ?? 30,
     auto_download_new_mailboxes: currentRow.auto_download_new_mailboxes ?? true,
+    download_schedule: currentRow.download_schedule ?? undefined,
   };
 };
 
@@ -191,18 +191,18 @@ export function AccountActionDialog({ currentRow, open, onOpenChange }: Props) {
         use_dangerous: data.use_dangerous,
         date_since: data.date_since,
         date_before: data.date_before,
-        folder_limit: data.folder_limit,
         download_interval_min: data.download_interval_min,
         download_batch_size: data.download_batch_size,
         auto_download_new_mailboxes: data.auto_download_new_mailboxes,
+        download_schedule: data.download_schedule || null,
       };
       if (isEdit) {
         const isAllMode = !data.date_since && !data.date_before;
-        const clear_folder_limit = !data.folder_limit;
+        const clear_download_schedule = !data.download_schedule && currentRow?.download_schedule;
         updateMutation.mutate({
           ...commonData,
           ...(isAllMode ? { clear_date_range: true } : {}),
-          ...(clear_folder_limit ? { clear_folder_limit: true } : {})
+          ...(clear_download_schedule ? { clear_download_schedule: true } : {})
         });
       } else {
         createMutation.mutate({ ...commonData, account_type: "IMAP" });
diff --git a/web/src/features/accounts/components/columns.tsx b/web/src/features/accounts/components/columns.tsx
index d92041a..0e8be32 100644
--- a/web/src/features/accounts/components/columns.tsx
+++ b/web/src/features/accounts/components/columns.tsx
@@ -106,9 +106,12 @@ export function useColumns(): ColumnDef<AccountModel>[] {
         if (account_type === "NoSync") {
           return <LongText className="text-center">n/a</LongText>
         }
+        if (row.original.download_schedule) {
+          return <LongText className="text-center">{row.original.download_schedule}</LongText>
+        }
         return <LongText className="text-center">{row.original.download_interval_min} min</LongText>
       },
-      meta: { className: 'text-center max-w-[120px]' },
+      meta: { className: 'text-center max-w-[160px]' },
       enableHiding: false,
     },
     {
diff --git a/web/src/features/accounts/components/data-table-row-actions.tsx b/web/src/features/accounts/components/data-table-row-actions.tsx
index 8607517..5187882 100644
--- a/web/src/features/accounts/components/data-table-row-actions.tsx
+++ b/web/src/features/accounts/components/data-table-row-actions.tsx
@@ -98,26 +98,6 @@ export function DataTableRowActions({ row }: DataTableRowActionsProps) {
           </Button>
         </DropdownMenuTrigger>
         <DropdownMenuContent align='end' className='w-[220px]'>
-
-          {showDownload && (
-            <DropdownMenuItem onClick={handleStartDownload}>
-              {t('accounts.startDownload')}
-              <DropdownMenuShortcut>
-                <IconPlayerPlay size={16} />
-              </DropdownMenuShortcut>
-            </DropdownMenuItem>
-          )}
-
-
-          {showDownload && (
-            <DropdownMenuItem onClick={handleCancelDownload}>
-              {t('accounts.cancelDownload')}
-              <DropdownMenuShortcut>
-                <IconPlayerStop size={16} />
-              </DropdownMenuShortcut>
-            </DropdownMenuItem>
-          )}
-          {showDownload && <DropdownMenuSeparator />}
           {hasPermission && <DropdownMenuItem
             onClick={() => {
               setCurrentRow(row.original)
@@ -169,6 +149,27 @@ export function DataTableRowActions({ row }: DataTableRowActionsProps) {
             </DropdownMenuShortcut>
           </DropdownMenuItem>}
           {hasPermission && <DropdownMenuSeparator />}
+
+          {showDownload && (
+            <DropdownMenuItem onClick={handleStartDownload}>
+              {t('accounts.startDownload')}
+              <DropdownMenuShortcut>
+                <IconPlayerPlay size={16} />
+              </DropdownMenuShortcut>
+            </DropdownMenuItem>
+          )}
+
+
+          {showDownload && (
+            <DropdownMenuItem onClick={handleCancelDownload}>
+              {t('accounts.cancelDownload')}
+              <DropdownMenuShortcut>
+                <IconPlayerStop size={16} />
+              </DropdownMenuShortcut>
+            </DropdownMenuItem>
+          )}
+          {showDownload && <DropdownMenuSeparator />}
+
           {hasPermission && <DropdownMenuItem
             onClick={() => {
               setCurrentRow(row.original)
diff --git a/web/src/features/accounts/components/schema.ts b/web/src/features/accounts/components/schema.ts
index 700375a..50d6cdf 100644
--- a/web/src/features/accounts/components/schema.ts
+++ b/web/src/features/accounts/components/schema.ts
@@ -79,12 +79,6 @@ export const getAccountSchema = (isEdit: boolean, t: (key: string) => string) =>
     use_dangerous: z.boolean(),
     date_since: dateSelectionSchema(t).optional(),
     date_before: relativeDateSchema(t).optional(),
-    folder_limit: z
-      .number({ invalid_type_error: t('validation.folderLimitMustBeNumber') })
-      .int()
-      .min(100, { message: t('validation.folderLimitMustBeAtLeast100') })
-      .nullable()
-      .optional(),
     download_interval_min: z
       .number({
         invalid_type_error: t('validation.incrementalSyncMustBeNumber'),
@@ -107,6 +101,18 @@ export const getAccountSchema = (isEdit: boolean, t: (key: string) => string) =>
         message: t('validation.singleRequestBatchSizeTooLarge'),
       }),
     auto_download_new_mailboxes: z.boolean(),
+    download_schedule: z
+      .string()
+      .optional()
+      .refine(
+        (val) => {
+          if (!val || val.trim() === '') return true;
+          const fields = val.trim().split(/\s+/);
+          if (fields.length < 6) return false;
+          return true;
+        },
+        { message: t('validation.invalidCronExpression') }
+      ),
   })
 
 export type AccountFormValues = z.infer<
diff --git a/web/src/features/accounts/components/step3.tsx b/web/src/features/accounts/components/step3.tsx
index 1a947b2..bd44a46 100644
--- a/web/src/features/accounts/components/step3.tsx
+++ b/web/src/features/accounts/components/step3.tsx
@@ -48,6 +48,72 @@ import i18n from "@/i18n";
 
 
 type SyncMode = 'all' | 'since_fixed' | 'since_relative' | 'before_relative';
+type ScheduleMode = 'interval' | 'cron';
+type CronMode = 'simple' | 'advanced';
+type CronFrequency = 'daily' | 'weekly' | 'monthly';
+
+interface CronSimpleState {
+    frequency: CronFrequency;
+    hour: number;
+    minute: number;
+    dayOfWeek: number;
+    dayOfMonth: number;
+}
+
+const DEFAULT_CRON_SIMPLE: CronSimpleState = {
+    frequency: 'daily',
+    hour: 0,
+    minute: 0,
+    dayOfWeek: 1,
+    dayOfMonth: 1,
+};
+
+function buildCronFromSimple(s: CronSimpleState): string {
+    switch (s.frequency) {
+        case 'daily':
+            return `0 ${s.minute} ${s.hour} * * *`;
+        case 'weekly':
+            return `0 ${s.minute} ${s.hour} * * ${s.dayOfWeek}`;
+        case 'monthly':
+            return `0 ${s.minute} ${s.hour} ${s.dayOfMonth} * *`;
+    }
+}
+
+function tryParseCronToSimple(cron: string): CronSimpleState | null {
+    const fields = cron.trim().split(/\s+/);
+    if (fields.length < 6) return null;
+
+    const sec = fields[0];
+    const min = fields[1];
+    const hour = fields[2];
+    const dom = fields[3];
+    const month = fields[4];
+    const dow = fields[5];
+
+    if (sec !== '0') return null;
+    if (month !== '*') return null;
+
+    const minuteVal = parseInt(min, 10);
+    const hourVal = parseInt(hour, 10);
+    if (isNaN(minuteVal) || isNaN(hourVal)) return null;
+
+    if (dom === '*' && dow === '*') {
+        return { frequency: 'daily', hour: hourVal, minute: minuteVal, dayOfWeek: 1, dayOfMonth: 1 };
+    }
+    if (dom === '*') {
+        const dowVal = parseInt(dow, 10);
+        if (!isNaN(dowVal)) {
+            return { frequency: 'weekly', hour: hourVal, minute: minuteVal, dayOfWeek: dowVal, dayOfMonth: 1 };
+        }
+    }
+    if (dow === '*') {
+        const domVal = parseInt(dom, 10);
+        if (!isNaN(domVal)) {
+            return { frequency: 'monthly', hour: hourVal, minute: minuteVal, dayOfWeek: 1, dayOfMonth: domVal };
+        }
+    }
+    return null;
+}
 
 export default function Step3() {
     const { t } = useTranslation();
@@ -61,6 +127,31 @@ export default function Step3() {
         return 'all';
     });
 
+    const [scheduleMode, setScheduleMode] = useState<ScheduleMode>(() => {
+        if (current.download_schedule) return 'cron';
+        return 'interval';
+    });
+
+    const [cronMode, setCronMode] = useState<CronMode>(() => {
+        if (current.download_schedule && tryParseCronToSimple(current.download_schedule)) {
+            return 'simple';
+        }
+        if (current.download_schedule) return 'advanced';
+        return 'simple';
+    });
+
+    const [cronSimple, setCronSimple] = useState<CronSimpleState>(() => {
+        if (current.download_schedule) {
+            return tryParseCronToSimple(current.download_schedule) ?? DEFAULT_CRON_SIMPLE;
+        }
+        return DEFAULT_CRON_SIMPLE;
+    });
+
+    const updateCronFromSimple = (partial: Partial<CronSimpleState>) => {
+        const next = { ...cronSimple, ...partial };
+        setCronSimple(next);
+        setValue('download_schedule', buildCronFromSimple(next));
+    };
 
     const handleModeChange = (mode: SyncMode) => {
         setSyncMode(mode);
@@ -77,41 +168,231 @@ export default function Step3() {
         }
     };
 
+    const handleScheduleModeChange = (mode: ScheduleMode) => {
+        setScheduleMode(mode);
+        if (mode === 'interval') {
+            setValue("download_schedule", undefined);
+        } else {
+            setValue("download_interval_min", 60);
+            if (cronMode === 'simple') {
+                updateCronFromSimple(cronSimple);
+            }
+        }
+    };
+
     return (
         <div className="space-y-8">
-            <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
-                <FormField
-                    control={control}
-                    name="download_interval_min"
-                    render={({ field }) => (
-                        <FormItem>
-                            <FormLabel>{t('accounts.downloadInterval')}</FormLabel>
-                            <FormControl>
-                                <Input type="number" {...field} onChange={(e) => field.onChange(parseInt(e.target.value, 10))} />
-                            </FormControl>
-                            <FormMessage />
-                            <FormDescription>
-                                {t('accounts.downloadIntervalPlaceholder')}
-                            </FormDescription>
-                        </FormItem>
+            <div className="space-y-4">
+                <FormItem>
+                    <FormLabel className="text-base font-semibold">{t('accounts.scheduleMode')}</FormLabel>
+                    <FormDescription>
+                        {t('accounts.scheduleModeDescription')}
+                    </FormDescription>
+                    <Select value={scheduleMode} onValueChange={(v) => handleScheduleModeChange(v as ScheduleMode)}>
+                        <SelectTrigger className="w-full">
+                            <SelectValue />
+                        </SelectTrigger>
+                        <SelectContent>
+                            <SelectItem value="interval">{t('accounts.scheduleModeInterval')}</SelectItem>
+                            <SelectItem value="cron">{t('accounts.scheduleModeCron')}</SelectItem>
+                        </SelectContent>
+                    </Select>
+                </FormItem>
+                <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
+                    {scheduleMode === 'interval' ? (
+                        <FormField
+                            control={control}
+                            name="download_interval_min"
+                            render={({ field }) => (
+                                <FormItem>
+                                    <FormLabel>{t('accounts.downloadInterval')}</FormLabel>
+                                    <FormControl>
+                                        <Input type="number" {...field} onChange={(e) => field.onChange(parseInt(e.target.value, 10))} />
+                                    </FormControl>
+                                    <FormMessage />
+                                    <FormDescription>
+                                        {t('accounts.downloadIntervalPlaceholder')}
+                                    </FormDescription>
+                                </FormItem>
+                            )}
+                        />
+                    ) : (
+                        <div className="space-y-3">
+                            <div className="flex items-center gap-2">
+                                {/* <FormLabel className="text-sm font-medium">{t('accounts.downloadSchedule')}</FormLabel> */}
+                                <div className="flex items-center rounded-md border text-xs">
+                                    <button
+                                        type="button"
+                                        className={`px-2 py-1 rounded-l-md ${cronMode === 'simple' ? 'bg-primary text-primary-foreground' : 'text-muted-foreground hover:text-foreground'}`}
+                                        onClick={() => setCronMode('simple')}
+                                    >
+                                        {t('accounts.cronSimple')}
+                                    </button>
+                                    <button
+                                        type="button"
+                                        className={`px-2 py-1 rounded-r-md ${cronMode === 'advanced' ? 'bg-primary text-primary-foreground' : 'text-muted-foreground hover:text-foreground'}`}
+                                        onClick={() => setCronMode('advanced')}
+                                    >
+                                        {t('accounts.cronAdvanced')}
+                                    </button>
+                                </div>
+                            </div>
+
+                            {cronMode === 'simple' ? (
+                                <div className="flex flex-wrap items-end gap-3">
+                                    <FormItem className="w-[140px]">
+                                        <FormLabel className="text-xs">{t('accounts.cronFrequency')}</FormLabel>
+                                        <Select
+                                            value={cronSimple.frequency}
+                                            onValueChange={(v) => updateCronFromSimple({ frequency: v as CronFrequency })}
+                                        >
+                                            <SelectTrigger>
+                                                <SelectValue />
+                                            </SelectTrigger>
+                                            <SelectContent>
+                                                <SelectItem value="daily">{t('accounts.cronDaily')}</SelectItem>
+                                                <SelectItem value="weekly">{t('accounts.cronWeekly')}</SelectItem>
+                                                <SelectItem value="monthly">{t('accounts.cronMonthly')}</SelectItem>
+                                            </SelectContent>
+                                        </Select>
+                                    </FormItem>
+
+                                    <FormItem className="w-[80px]">
+                                        <FormLabel className="text-xs">{t('accounts.cronHour')}</FormLabel>
+                                        <Select
+                                            value={String(cronSimple.hour)}
+                                            onValueChange={(v) => updateCronFromSimple({ hour: parseInt(v, 10) })}
+                                        >
+                                            <SelectTrigger>
+                                                <SelectValue />
+                                            </SelectTrigger>
+                                            <SelectContent>
+                                                {Array.from({ length: 24 }, (_, i) => (
+                                                    <SelectItem key={i} value={String(i)}>
+                                                        {String(i).padStart(2, '0')}
+                                                    </SelectItem>
+                                                ))}
+                                            </SelectContent>
+                                        </Select>
+                                    </FormItem>
+
+                                    <span className="text-muted-foreground pb-2">:</span>
+
+                                    <FormItem className="w-[80px]">
+                                        <FormLabel className="text-xs">{t('accounts.cronMinute')}</FormLabel>
+                                        <Select
+                                            value={String(cronSimple.minute)}
+                                            onValueChange={(v) => updateCronFromSimple({ minute: parseInt(v, 10) })}
+                                        >
+                                            <SelectTrigger>
+                                                <SelectValue />
+                                            </SelectTrigger>
+                                            <SelectContent>
+                                                {[0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55].map((m) => (
+                                                    <SelectItem key={m} value={String(m)}>
+                                                        {String(m).padStart(2, '0')}
+                                                    </SelectItem>
+                                                ))}
+                                            </SelectContent>
+                                        </Select>
+                                    </FormItem>
+
+                                    {cronSimple.frequency === 'weekly' && (
+                                        <FormItem className="w-[140px]">
+                                            <FormLabel className="text-xs">{t('accounts.cronDayOfWeek')}</FormLabel>
+                                            <Select
+                                                value={String(cronSimple.dayOfWeek)}
+                                                onValueChange={(v) => updateCronFromSimple({ dayOfWeek: parseInt(v, 10) })}
+                                            >
+                                                <SelectTrigger>
+                                                    <SelectValue />
+                                                </SelectTrigger>
+                                                <SelectContent>
+                                                    <SelectItem value="1">{t('accounts.cronMonday')}</SelectItem>
+                                                    <SelectItem value="2">{t('accounts.cronTuesday')}</SelectItem>
+                                                    <SelectItem value="3">{t('accounts.cronWednesday')}</SelectItem>
+                                                    <SelectItem value="4">{t('accounts.cronThursday')}</SelectItem>
+                                                    <SelectItem value="5">{t('accounts.cronFriday')}</SelectItem>
+                                                    <SelectItem value="6">{t('accounts.cronSaturday')}</SelectItem>
+                                                    <SelectItem value="0">{t('accounts.cronSunday')}</SelectItem>
+                                                </SelectContent>
+                                            </Select>
+                                        </FormItem>
+                                    )}
+
+                                    {cronSimple.frequency === 'monthly' && (
+                                        <FormItem className="w-[90px]">
+                                            <FormLabel className="text-xs">{t('accounts.cronDayOfMonth')}</FormLabel>
+                                            <Select
+                                                value={String(cronSimple.dayOfMonth)}
+                                                onValueChange={(v) => updateCronFromSimple({ dayOfMonth: parseInt(v, 10) })}
+                                            >
+                                                <SelectTrigger>
+                                                    <SelectValue />
+                                                </SelectTrigger>
+                                                <SelectContent className="max-h-[200px]">
+                                                    {Array.from({ length: 28 }, (_, i) => i + 1).map((d) => (
+                                                        <SelectItem key={d} value={String(d)}>
+                                                            {d}
+                                                        </SelectItem>
+                                                    ))}
+                                                </SelectContent>
+                                            </Select>
+                                        </FormItem>
+                                    )}
+
+                                    <div className="text-xs text-muted-foreground pb-2 font-mono">
+                                        = {buildCronFromSimple(cronSimple)}
+                                    </div>
+                                </div>
+                            ) : (
+                                <FormField
+                                    control={control}
+                                    name="download_schedule"
+                                    render={({ field }) => (
+                                        <FormItem>
+                                            <FormControl>
+                                                <Input
+                                                    {...field}
+                                                    value={field.value ?? ''}
+                                                    placeholder={t('accounts.downloadSchedulePlaceholder')}
+                                                />
+                                            </FormControl>
+                                            <FormDescription>
+                                                {t('accounts.downloadScheduleDescription')}
+                                            </FormDescription>
+                                            <FormMessage />
+                                        </FormItem>
+                                    )}
+                                />
+                            )}
+
+                            {cronMode === 'simple' && (
+                                <FormDescription>{t('accounts.downloadScheduleDescription')}</FormDescription>
+                            )}
+
+                            <div className="text-xs text-muted-foreground mt-1 flex items-center gap-1">
+                                <span>{t('accounts.cronTimezoneNote')}</span>
+                            </div>
+                        </div>
                     )}
-                />
-                <FormField
-                    control={control}
-                    name="download_batch_size"
-                    render={({ field }) => (
-                        <FormItem>
-                            <FormLabel>{t('accounts.downloadBatchSize')}</FormLabel>
-                            <FormControl>
-                                <Input type="number" {...field} onChange={(e) => field.onChange(parseInt(e.target.value, 10))} />
-                            </FormControl>
-                            <FormMessage />
-                            <FormDescription>
-                                {t('accounts.downloadBatchSizeDescription')}
-                            </FormDescription>
-                        </FormItem>
-                    )}
-                />
+                    <FormField
+                        control={control}
+                        name="download_batch_size"
+                        render={({ field }) => (
+                            <FormItem>
+                                <FormLabel>{t('accounts.downloadBatchSize')}</FormLabel>
+                                <FormControl>
+                                    <Input type="number" {...field} onChange={(e) => field.onChange(parseInt(e.target.value, 10))} />
+                                </FormControl>
+                                <FormMessage />
+                                <FormDescription>
+                                    {t('accounts.downloadBatchSizeDescription')}
+                                </FormDescription>
+                            </FormItem>
+                        )}
+                    />
+                </div>
             </div>
 
             <FormField
@@ -249,29 +530,6 @@ export default function Step3() {
             />
 
             <hr className="my-4" />
-
-            <FormField
-                control={control}
-                name="folder_limit"
-                render={({ field }) => (
-                    <FormItem>
-                        <FormLabel>{t('accounts.folderLimit')}</FormLabel>
-                        <FormDescription>{t('accounts.folderLimitDescription')}</FormDescription>
-                        <FormControl>
-                            <Input
-                                type="number"
-                                placeholder={t('accounts.folderLimitPlaceholder')}
-                                value={field.value ?? ''}
-                                onChange={(e) => {
-                                    const value = e.target.value;
-                                    field.onChange(value === '' ? null : Number(value));
-                                }}
-                            />
-                        </FormControl>
-                        <FormMessage />
-                    </FormItem>
-                )}
-            />
         </div>
     );
 }
\ No newline at end of file
diff --git a/web/src/features/accounts/components/step4.tsx b/web/src/features/accounts/components/step4.tsx
index 29a4226..07276a4 100644
--- a/web/src/features/accounts/components/step4.tsx
+++ b/web/src/features/accounts/components/step4.tsx
@@ -50,7 +50,7 @@ export default function Step4() {
 
     return (
         <div className="rounded-xl">
-            <Accordion type="multiple" defaultValue={['email', 'account_name', 'login_name', 'imap', 'date_since', 'folder_limit', 'sync_interval', 'sync_scope', 'sync_batch_size']}>
+            <Accordion type="multiple" defaultValue={['email', 'account_name', 'login_name', 'imap', 'date_since', 'sync_interval', 'sync_scope', 'sync_batch_size', 'download_schedule']}>
                 <AccordionItem key="email" value="email">
                     <AccordionTrigger className="font-medium capitalize text-gray-600">{t('accounts.email')}:</AccordionTrigger>
                     <AccordionContent>{summaryData.email}</AccordionContent>
@@ -154,11 +154,6 @@ export default function Step4() {
                 </AccordionItem>
 
 
-                <AccordionItem key="folder_limit" value="folder_limit">
-                    <AccordionTrigger className="font-medium capitalize text-gray-600">{t('accounts.folderLimit')}:</AccordionTrigger>
-                    <AccordionContent>{summaryData.folder_limit ?? t('accounts.notAvailable')}</AccordionContent>
-                </AccordionItem>
-
                 <AccordionItem key="sync_interval" value="sync_interval">
                     <AccordionTrigger className="font-medium capitalize text-gray-600">{t('accounts.downloadInterval')}:</AccordionTrigger>
                     <AccordionContent>{summaryData.download_interval_min} {t('accounts.minutes')}</AccordionContent>
@@ -169,6 +164,11 @@ export default function Step4() {
                     <AccordionContent>{summaryData.download_batch_size}</AccordionContent>
                 </AccordionItem>
 
+                <AccordionItem key="download_schedule" value="download_schedule">
+                    <AccordionTrigger className="font-medium capitalize text-gray-600">{t('accounts.downloadSchedule')}:</AccordionTrigger>
+                    <AccordionContent>{summaryData.download_schedule || t('accounts.notAvailable')}</AccordionContent>
+                </AccordionItem>
+
                 <AccordionItem key="auto_download_new_mailboxes" value="auto_download_new_mailboxes">
                     <AccordionTrigger className="font-medium capitalize text-gray-600">{t('accounts.autoDownloadNewMailboxes')}:</AccordionTrigger>
                     <AccordionContent>{summaryData.auto_download_new_mailboxes ? t('common.yes') : t('common.no')}</AccordionContent>
diff --git a/web/src/locales/ar.json b/web/src/locales/ar.json
index c289a37..48a7cc9 100644
--- a/web/src/locales/ar.json
+++ b/web/src/locales/ar.json
@@ -115,6 +115,24 @@
     "continue": "متابعة",
     "createdAt": "تاريخ الإنشاء",
     "creationFailed": "فشل الإنشاء، يرجى المحاولة مرة أخرى لاحقًا",
+    "cronAdvanced": "تعبير متقدم",
+    "cronDaily": "يومياً",
+    "cronDayOfMonth": "اليوم من الأسبوع",
+    "cronDayOfWeek": "اليوم من الأسبوع",
+    "cronFrequency": "التكرار",
+    "cronFriday": "الجمعة",
+    "cronHour": "الساعة",
+    "cronMinute": "الدقيقة",
+    "cronMonday": "الإثنين",
+    "cronMonthly": "شهرياً",
+    "cronSaturday": "السبت",
+    "cronSimple": "تعبير بسيط",
+    "cronSunday": "الأحد",
+    "cronThursday": "الخميس",
+    "cronTimezoneNote": "جميع الأوقات بالتوقيت المحلي للخادم.",
+    "cronTuesday": "الثلاثاء",
+    "cronWednesday": "الأربعاء",
+    "cronWeekly": "أسبوعياً",
     "dateSelection": "تحديد التاريخ",
     "dateSince": "التاريخ منذ",
     "days": "أيام",
@@ -133,6 +151,9 @@
     "downloadFailed": "فشل بدء مهمة التنزيل",
     "downloadInterval": "دورة التنزيل (بالدقائق)",
     "downloadIntervalPlaceholder": "أدخل الدقائق",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "كرون من 6 حقول (ثانية-دقائق-ساعات-يوم-شهر-أسبوع) بتوقيت الخادم. يتجاوز الفاصل الزمني.",
+    "downloadSchedulePlaceholder": "مثال: 0 0 * * *",
     "downloadScope": "استراتيجية التنزيل",
     "downloadScopeDescription": "اختر رسائل البريد الإلكتروني التي يجب فهرستها وتنزيلها.",
     "downloadStarted": "بدأت مهمة التنزيل",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "حفظ التغييرات",
+    "scheduleMode": "جدولة التنزيل",
+    "scheduleModeCron": "تعبير Cron",
+    "scheduleModeDescription": "تعيين التنزيل بفواصل زمنية ثابتة أو عبر Cron.",
+    "scheduleModeInterval": "فواصل زمنية ثابتة",
     "selectAccountType": "اختر نوع الحساب",
     "selectAtLeastOneFolder": "يرجى تحديد مجلد واحد على الأقل",
     "selectAuthMethod": "اختر طريقة مصادقة",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "يجب أن يكون منفذ IMAP عددًا صحيحًا موجبًا",
     "incrementalSyncMustBeAtLeast10": "يجب أن يكون فاصل المزامنة التزايدية 10 دقائق على الأقل",
     "incrementalSyncMustBeNumber": "يجب أن يكون فاصل المزامنة التزايدية رقمًا",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "عنوان بريد إلكتروني غير صالح",
     "invalidUrl": "عنوان URL غير صالح",
     "passwordMinLength": "يجب أن تتكون كلمة المرور من {{min}} أحرف على الأقل",
diff --git a/web/src/locales/da.json b/web/src/locales/da.json
index ca1dc4c..b68990a 100644
--- a/web/src/locales/da.json
+++ b/web/src/locales/da.json
@@ -115,6 +115,24 @@
     "continue": "Fortsæt",
     "createdAt": "Oprettet",
     "creationFailed": "Oprettelse mislykkedes, prøv venligst igen senere",
+    "cronAdvanced": "Avanceret udtryk",
+    "cronDaily": "Dagligt",
+    "cronDayOfMonth": "Ugedag",
+    "cronDayOfWeek": "Ugedag",
+    "cronFrequency": "Frekvens",
+    "cronFriday": "Fredag",
+    "cronHour": "Time",
+    "cronMinute": "Minut",
+    "cronMonday": "Mandag",
+    "cronMonthly": "Månedligt",
+    "cronSaturday": "Lørdag",
+    "cronSimple": "Simpelt udtryk",
+    "cronSunday": "Søndag",
+    "cronThursday": "Torsdag",
+    "cronTimezoneNote": "Alle tider er serverens lokale tid.",
+    "cronTuesday": "Tirsdag",
+    "cronWednesday": "Onsdag",
+    "cronWeekly": "Ugentligt",
     "dateSelection": "Datovalg",
     "dateSince": "Dato fra",
     "days": "Dage",
@@ -133,6 +151,9 @@
     "downloadFailed": "Kunne ikke starte download-opgave",
     "downloadInterval": "Downloadinterval (minutter)",
     "downloadIntervalPlaceholder": "Indtast minutter",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "6-felters Cron (sek min time dag mdr ugedag) i servertid. Tilsidesætter interval.",
+    "downloadSchedulePlaceholder": "F.eks.: 0 0 * * *",
     "downloadScope": "Downloadstrategi",
     "downloadScopeDescription": "Vælg hvilke e-mails der skal indekseres og downloades.",
     "downloadStarted": "Download-opgave startet",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Gem ændringer",
+    "scheduleMode": "Planlægning af download",
+    "scheduleModeCron": "Cron-udtryk",
+    "scheduleModeDescription": "Download via faste intervaller eller Cron.",
+    "scheduleModeInterval": "Fast interval",
     "selectAccountType": "Vælg kontotype",
     "selectAtLeastOneFolder": "Vælg venligst mindst én mappe",
     "selectAuthMethod": "Vælg en godkendelsesmetode",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP-port skal være et positivt heltal",
     "incrementalSyncMustBeAtLeast10": "Inkrementelt synkroniseringsinterval skal være mindst 10 minutter",
     "incrementalSyncMustBeNumber": "Inkrementelt synkroniseringsinterval skal være et tal",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Ugyldig e-mailadresse",
     "invalidUrl": "Ugyldig URL",
     "passwordMinLength": "Adgangskoden skal være mindst {{min}} tegn lang",
diff --git a/web/src/locales/de.json b/web/src/locales/de.json
index 2f87b6c..44e1396 100644
--- a/web/src/locales/de.json
+++ b/web/src/locales/de.json
@@ -115,6 +115,24 @@
     "continue": "Weiter",
     "createdAt": "Erstellt am",
     "creationFailed": "Erstellung fehlgeschlagen, bitte versuchen Sie es später erneut",
+    "cronAdvanced": "Erweiterter Ausdruck",
+    "cronDaily": "Täglich",
+    "cronDayOfMonth": "Wochentag",
+    "cronDayOfWeek": "Wochentag",
+    "cronFrequency": "Häufigkeit",
+    "cronFriday": "Freitag",
+    "cronHour": "Stunde",
+    "cronMinute": "Minute",
+    "cronMonday": "Montag",
+    "cronMonthly": "Monatlich",
+    "cronSaturday": "Samstag",
+    "cronSimple": "Einfacher Ausdruck",
+    "cronSunday": "Sonntag",
+    "cronThursday": "Donnerstag",
+    "cronTimezoneNote": "Alle Zeiten nutzen Server-Ortszeit.",
+    "cronTuesday": "Dienstag",
+    "cronWednesday": "Mittwoch",
+    "cronWeekly": "Wöchentlich",
     "dateSelection": "Datumsauswahl",
     "dateSince": "Datum seit",
     "days": "Tage",
@@ -133,6 +151,9 @@
     "downloadFailed": "Download-Aufgabe konnte nicht gestartet werden",
     "downloadInterval": "Download-Intervall (Minuten)",
     "downloadIntervalPlaceholder": "Minuten eingeben",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "6-Felder-Cron (Sek Min Std Tag Mon Wochentag) in Serverzeit. Ersetzt Intervall.",
+    "downloadSchedulePlaceholder": "Z. B.: 0 0 * * *",
     "downloadScope": "Download-Strategie",
     "downloadScopeDescription": "Wählen Sie aus, welche E-Mails indiziert und heruntergeladen werden sollen.",
     "downloadStarted": "Download-Aufgabe gestartet",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Änderungen speichern",
+    "scheduleMode": "Download-Zeitplan",
+    "scheduleModeCron": "Cron-Ausdruck",
+    "scheduleModeDescription": "Download nach festem Intervall oder Cron-Ausdruck.",
+    "scheduleModeInterval": "Festes Intervall",
     "selectAccountType": "Kontotyp auswählen",
     "selectAtLeastOneFolder": "Wählen Sie mindestens einen Ordner aus",
     "selectAuthMethod": "Authentifizierungsmethode auswählen",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "Der IMAP-Port muss eine positive ganze Zahl sein",
     "incrementalSyncMustBeAtLeast10": "Das inkrementelle Synchronisierungsintervall muss mindestens 10 Minuten betragen",
     "incrementalSyncMustBeNumber": "Das inkrementelle Synchronisierungsintervall muss eine Zahl sein",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Ungültige E-Mail-Adresse",
     "invalidUrl": "Ungültige URL",
     "passwordMinLength": "Das Passwort muss mindestens {{min}} Zeichen lang sein",
diff --git a/web/src/locales/en.json b/web/src/locales/en.json
index 844e820..dce0cde 100644
--- a/web/src/locales/en.json
+++ b/web/src/locales/en.json
@@ -115,6 +115,24 @@
     "continue": "Continue",
     "createdAt": "Created At",
     "creationFailed": "Creation failed, please try again later",
+    "cronAdvanced": "Advanced Expression",
+    "cronDaily": "Daily",
+    "cronDayOfMonth": "Day of Week",
+    "cronDayOfWeek": "Day of Week",
+    "cronFrequency": "Frequency",
+    "cronFriday": "Friday",
+    "cronHour": "Hour",
+    "cronMinute": "Minute",
+    "cronMonday": "Monday",
+    "cronMonthly": "Monthly",
+    "cronSaturday": "Saturday",
+    "cronSimple": "Simple Expression",
+    "cronSunday": "Sunday",
+    "cronThursday": "Thursday",
+    "cronTimezoneNote": "All times use server local timezone.",
+    "cronTuesday": "Tuesday",
+    "cronWednesday": "Wednesday",
+    "cronWeekly": "Weekly",
     "dateSelection": "Date Selection",
     "dateSince": "Date Since",
     "days": "Days",
@@ -133,6 +151,9 @@
     "downloadFailed": "Failed to start download task",
     "downloadInterval": "Download Interval (minutes)",
     "downloadIntervalPlaceholder": "Enter minutes",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "6-field Cron (sec min hour day month dow) in server time. Overrides interval.",
+    "downloadSchedulePlaceholder": "e.g., 0 0 * * *",
     "downloadScope": "Download Strategy",
     "downloadScopeDescription": "Choose which emails should be indexed and downloaded.",
     "downloadStarted": "Download task started",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Save changes",
+    "scheduleMode": "Download Schedule",
+    "scheduleModeCron": "Cron Expression",
+    "scheduleModeDescription": "Download via fixed intervals or Cron expressions.",
+    "scheduleModeInterval": "Fixed Interval",
     "selectAccountType": "Select account type",
     "selectAtLeastOneFolder": "Please select at least one folder",
     "selectAuthMethod": "Select an authentication method",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP port must be a positive integer",
     "incrementalSyncMustBeAtLeast10": "Incremental sync interval must be at least 10 minutes",
     "incrementalSyncMustBeNumber": "Incremental sync interval must be a number",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Invalid email address",
     "invalidUrl": "Invalid URL",
     "passwordMinLength": "Password must be at least {{min}} characters long",
diff --git a/web/src/locales/es.json b/web/src/locales/es.json
index 2934f4d..6608cdb 100644
--- a/web/src/locales/es.json
+++ b/web/src/locales/es.json
@@ -115,6 +115,24 @@
     "continue": "Continuar",
     "createdAt": "Creado el",
     "creationFailed": "Error al crear, por favor, inténtalo de nuevo más tarde",
+    "cronAdvanced": "Expresión avanzada",
+    "cronDaily": "Diario",
+    "cronDayOfMonth": "Día de la semana",
+    "cronDayOfWeek": "Día de la semana",
+    "cronFrequency": "Frecuencia",
+    "cronFriday": "Viernes",
+    "cronHour": "Hora",
+    "cronMinute": "Minuto",
+    "cronMonday": "Lunes",
+    "cronMonthly": "Mensual",
+    "cronSaturday": "Sábado",
+    "cronSimple": "Expresión simple",
+    "cronSunday": "Domingo",
+    "cronThursday": "Jueves",
+    "cronTimezoneNote": "Horas en zona horaria del servidor.",
+    "cronTuesday": "Martes",
+    "cronWednesday": "Miércoles",
+    "cronWeekly": "Semanal",
     "dateSelection": "Selección de fecha",
     "dateSince": "Fecha desde",
     "days": "Días",
@@ -133,6 +151,9 @@
     "downloadFailed": "Error al iniciar la tarea de descarga",
     "downloadInterval": "Intervalo de descarga (minutos)",
     "downloadIntervalPlaceholder": "Ingresa los minutos",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "Cron de 6 campos (seg min hora día mes día-sem) en hora del servidor. Anula intervalo.",
+    "downloadSchedulePlaceholder": "ej., 0 0 * * *",
     "downloadScope": "Estrategia de descarga",
     "downloadScopeDescription": "Elija qué correos electrónicos deben indexarse y descargarse.",
     "downloadStarted": "Tarea de descarga iniciada",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Guardar cambios",
+    "scheduleMode": "Programación de descarga",
+    "scheduleModeCron": "Expresión Cron",
+    "scheduleModeDescription": "Descarga por intervalos fijos o expresiones Cron.",
+    "scheduleModeInterval": "Intervalo fijo",
     "selectAccountType": "Seleccionar tipo de cuenta",
     "selectAtLeastOneFolder": "Selecciona al menos una carpeta",
     "selectAuthMethod": "Selecciona el método de autenticación",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "El puerto IMAP debe ser un número entero positivo",
     "incrementalSyncMustBeAtLeast10": "El intervalo de sincronización incremental debe ser de al menos 10 minutos",
     "incrementalSyncMustBeNumber": "El intervalo de sincronización incremental debe ser un número",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Dirección de correo electrónico inválida",
     "invalidUrl": "URL inválida",
     "passwordMinLength": "La contraseña debe tener al menos {{min}} caracteres",
diff --git a/web/src/locales/fi.json b/web/src/locales/fi.json
index a65d698..b5faf51 100644
--- a/web/src/locales/fi.json
+++ b/web/src/locales/fi.json
@@ -115,6 +115,24 @@
     "continue": "Jatka",
     "createdAt": "Luotu",
     "creationFailed": "Luominen epäonnistui, yritä myöhemmin uudelleen",
+    "cronAdvanced": "Edistynyt lauseke",
+    "cronDaily": "Päivittäin",
+    "cronDayOfMonth": "Viikonpäivä",
+    "cronDayOfWeek": "Viikonpäivä",
+    "cronFrequency": "Tiheys",
+    "cronFriday": "Perjantai",
+    "cronHour": "Tunti",
+    "cronMinute": "Minuutti",
+    "cronMonday": "Maanantai",
+    "cronMonthly": "Kuukausittain",
+    "cronSaturday": "Lauantai",
+    "cronSimple": "Yksinkertainen lauseke",
+    "cronSunday": "Sunnuntai",
+    "cronThursday": "Torstai",
+    "cronTimezoneNote": "Kaikki ajat palvelimen paikallista aikaa.",
+    "cronTuesday": "Tiistai",
+    "cronWednesday": "Keskiviikko",
+    "cronWeekly": "Viikoittain",
     "dateSelection": "Päivämäärän valinta",
     "dateSince": "Päivämäärä alkaen",
     "days": "Päivää",
@@ -133,6 +151,9 @@
     "downloadFailed": "Lataustehtävän aloittaminen epäonnistui",
     "downloadInterval": "Latausväli (minuuttia)",
     "downloadIntervalPlaceholder": "Syötä minuutit",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "6-kenttäinen Cron (sek min tun pv kk vkpv) palvelimen ajassa. Korvaa aikavälin.",
+    "downloadSchedulePlaceholder": "esim. 0 0 * * *",
     "downloadScope": "Latausstrategia",
     "downloadScopeDescription": "Valitse, mitkä sähköpostit indeksoidaan ja ladataan.",
     "downloadStarted": "Lataustehtävä aloitettu",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Tallenna muutokset",
+    "scheduleMode": "Latauksen ajoitus",
+    "scheduleModeCron": "Cron-lauseke",
+    "scheduleModeDescription": "Lataa säännöllisin väliajoin tai Cron-lausekkeella.",
+    "scheduleModeInterval": "Säännöllinen väliaika",
     "selectAccountType": "Valitse tilityyppi",
     "selectAtLeastOneFolder": "Valitse vähintään yksi kansio",
     "selectAuthMethod": "Valitse todennusmenetelmä",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP-portin on oltava positiivinen kokonaisluku",
     "incrementalSyncMustBeAtLeast10": "Lisäävän synkronoinnin välin on oltava vähintään 10 minuuttia",
     "incrementalSyncMustBeNumber": "Lisäävän synkronoinnin välin on oltava numero",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Virheellinen sähköpostiosoite",
     "invalidUrl": "Virheellinen URL-osoite",
     "passwordMinLength": "Salasanan on oltava vähintään {{min}} merkkiä pitkä",
diff --git a/web/src/locales/fr.json b/web/src/locales/fr.json
index 918860a..630b7fe 100644
--- a/web/src/locales/fr.json
+++ b/web/src/locales/fr.json
@@ -115,6 +115,24 @@
     "continue": "Continuer",
     "createdAt": "Créé le",
     "creationFailed": "La création a échoué, veuillez réessayer plus tard",
+    "cronAdvanced": "Expression avancée",
+    "cronDaily": "Chaque jour",
+    "cronDayOfMonth": "Jour de la semaine",
+    "cronDayOfWeek": "Jour de la semaine",
+    "cronFrequency": "Fréquence",
+    "cronFriday": "Vendredi",
+    "cronHour": "Heure",
+    "cronMinute": "Minute",
+    "cronMonday": "Lundi",
+    "cronMonthly": "Chaque mois",
+    "cronSaturday": "Samedi",
+    "cronSimple": "Expression simple",
+    "cronSunday": "Dimanche",
+    "cronThursday": "Jeudi",
+    "cronTimezoneNote": "Heures au fuseau horaire du serveur.",
+    "cronTuesday": "Mardi",
+    "cronWednesday": "Mercredi",
+    "cronWeekly": "Chaque semaine",
     "dateSelection": "Sélection de Date",
     "dateSince": "Date Depuis",
     "days": "Jours",
@@ -133,6 +151,9 @@
     "downloadFailed": "Échec du lancement de la tâche de téléchargement",
     "downloadInterval": "Intervalle de téléchargement (minutes)",
     "downloadIntervalPlaceholder": "Entrer les minutes",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "Cron à 6 champs (sec min heure jour mois jour-sem) à l'heure du serveur. Remplace l'intervalle.",
+    "downloadSchedulePlaceholder": "ex. 0 0 * * *",
     "downloadScope": "Stratégie de téléchargement",
     "downloadScopeDescription": "Choisissez les e-mails à indexer et à télécharger.",
     "downloadStarted": "Tâche de téléchargement lancée",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Enregistrer les Modifications",
+    "scheduleMode": "Planification de téléchargement",
+    "scheduleModeCron": "Expression Cron",
+    "scheduleModeDescription": "Téléchargement par intervalle fixe ou expression Cron.",
+    "scheduleModeInterval": "Intervalle fixe",
     "selectAccountType": "Sélectionner le type de compte",
     "selectAtLeastOneFolder": "Veuillez sélectionner au moins un dossier",
     "selectAuthMethod": "Sélectionner une méthode d'authentification",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "Le port IMAP doit être un entier positif",
     "incrementalSyncMustBeAtLeast10": "L'intervalle de synchronisation incrémentielle doit être d'au moins 10 minutes",
     "incrementalSyncMustBeNumber": "L'intervalle de synchronisation incrémentielle doit être un nombre",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Adresse e-mail non valide",
     "invalidUrl": "URL non valide",
     "passwordMinLength": "Le mot de passe doit contenir au moins {{min}} caractères",
diff --git a/web/src/locales/it.json b/web/src/locales/it.json
index edf726e..d689de6 100644
--- a/web/src/locales/it.json
+++ b/web/src/locales/it.json
@@ -115,6 +115,24 @@
     "continue": "Continua",
     "createdAt": "Creato Il",
     "creationFailed": "Creazione fallita, riprova più tardi",
+    "cronAdvanced": "Espressione avanzata",
+    "cronDaily": "Ogni giorno",
+    "cronDayOfMonth": "Giorno della settimana",
+    "cronDayOfWeek": "Giorno della settimana",
+    "cronFrequency": "Frequenza",
+    "cronFriday": "Venerdì",
+    "cronHour": "Ora",
+    "cronMinute": "Minuto",
+    "cronMonday": "Lunedì",
+    "cronMonthly": "Ogni mese",
+    "cronSaturday": "Sabato",
+    "cronSimple": "Espressione semplice",
+    "cronSunday": "Domenica",
+    "cronThursday": "Giovedì",
+    "cronTimezoneNote": "Orari nel fuso orario del server.",
+    "cronTuesday": "Martedì",
+    "cronWednesday": "Mercoledì",
+    "cronWeekly": "Ogni settimana",
     "dateSelection": "Selezione Data",
     "dateSince": "Data Da",
     "days": "Giorni",
@@ -133,6 +151,9 @@
     "downloadFailed": "Avvio attività di download non riuscito",
     "downloadInterval": "Intervallo di download (minuti)",
     "downloadIntervalPlaceholder": "Inserisci i minuti",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "Cron a 6 campi (sec min ora giorno mese giorno-sett) in ora del server. Sostituisce l'intervallo.",
+    "downloadSchedulePlaceholder": "es. 0 0 * * *",
     "downloadScope": "Strategia di download",
     "downloadScopeDescription": "Scegli quali email indicizzare e scaricare.",
     "downloadStarted": "Attività di download avviata",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Salva Modifiche",
+    "scheduleMode": "Pianificazione del download",
+    "scheduleModeCron": "Espressione Cron",
+    "scheduleModeDescription": "Download a intervalli fissi o tramite espressioni Cron.",
+    "scheduleModeInterval": "Intervallo fisso",
     "selectAccountType": "Seleziona tipo di account",
     "selectAtLeastOneFolder": "Seleziona almeno una cartella",
     "selectAuthMethod": "Seleziona un metodo di autenticazione",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "La porta IMAP deve essere un numero intero positivo",
     "incrementalSyncMustBeAtLeast10": "L'intervallo di sincronizzazione incrementale deve essere di almeno 10 minuti",
     "incrementalSyncMustBeNumber": "L'intervallo di sincronizzazione incrementale deve essere un numero",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Indirizzo email non valido",
     "invalidUrl": "URL non valido",
     "passwordMinLength": "La password deve contenere almeno {{min}} caratteri",
diff --git a/web/src/locales/jp.json b/web/src/locales/jp.json
index 65b9f12..c2827a3 100644
--- a/web/src/locales/jp.json
+++ b/web/src/locales/jp.json
@@ -115,6 +115,24 @@
     "continue": "続行",
     "createdAt": "作成日時",
     "creationFailed": "作成に失敗しました。しばらくしてからもう一度お試しください。",
+    "cronAdvanced": "高度な式",
+    "cronDaily": "毎日",
+    "cronDayOfMonth": "曜日",
+    "cronDayOfWeek": "曜日",
+    "cronFrequency": "頻度",
+    "cronFriday": "金曜日",
+    "cronHour": "时",
+    "cronMinute": "分",
+    "cronMonday": "月曜日",
+    "cronMonthly": "毎月",
+    "cronSaturday": "土曜日",
+    "cronSimple": "簡易式",
+    "cronSunday": "日曜日",
+    "cronThursday": "木曜日",
+    "cronTimezoneNote": "時間はサーバーの現地時間です。",
+    "cronTuesday": "火曜日",
+    "cronWednesday": "水曜日",
+    "cronWeekly": "毎週",
     "dateSelection": "日付選択",
     "dateSince": "同期開始日",
     "days": "日",
@@ -133,6 +151,9 @@
     "downloadFailed": "ダウンロードタスクの起動に失敗しました",
     "downloadInterval": "ダウンロード間隔 (分)",
     "downloadIntervalPlaceholder": "分を入力してください",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "サーバー時間の6フィールドCron式（秒分時日月曜日）。設定値より優先。",
+    "downloadSchedulePlaceholder": "例：0 0 * * *",
     "downloadScope": "ダウンロード戦略",
     "downloadScopeDescription": "インデックスとダウンロードの対象となるメールを選択してください。",
     "downloadStarted": "ダウンロードタスクを開始しました",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "変更を保存",
+    "scheduleMode": "ダウンロードスケジュール",
+    "scheduleModeCron": "Cron式",
+    "scheduleModeDescription": "固定間隔またはCron式でダウンロード。",
+    "scheduleModeInterval": "固定間隔",
     "selectAccountType": "アカウントの種類を選択",
     "selectAtLeastOneFolder": "少なくとも1つのフォルダーを選択してください",
     "selectAuthMethod": "認証方式を選択",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAPポートは正の整数である必要があります",
     "incrementalSyncMustBeAtLeast10": "増分同期間隔は10分以上である必要があります",
     "incrementalSyncMustBeNumber": "増分同期間隔は数値である必要があります",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "無効なメールアドレスです",
     "invalidUrl": "無効なURLです",
     "passwordMinLength": "パスワードは{{min}}文字以上である必要があります",
diff --git a/web/src/locales/ko.json b/web/src/locales/ko.json
index 50e7f5f..9525994 100644
--- a/web/src/locales/ko.json
+++ b/web/src/locales/ko.json
@@ -115,6 +115,24 @@
     "continue": "계속",
     "createdAt": "생성일",
     "creationFailed": "생성에 실패했습니다. 나중에 다시 시도하십시오.",
+    "cronAdvanced": "고급 표현식",
+    "cronDaily": "매일",
+    "cronDayOfMonth": "요일",
+    "cronDayOfWeek": "요일",
+    "cronFrequency": "주기",
+    "cronFriday": "금요일",
+    "cronHour": "시",
+    "cronMinute": "분",
+    "cronMonday": "월요일",
+    "cronMonthly": "매월",
+    "cronSaturday": "토요일",
+    "cronSimple": "간단한 표현식",
+    "cronSunday": "일요일",
+    "cronThursday": "목요일",
+    "cronTimezoneNote": "모든 시간은 서버 현지 시간 기준입니다.",
+    "cronTuesday": "화요일",
+    "cronWednesday": "수요일",
+    "cronWeekly": "매주",
     "dateSelection": "날짜 선택",
     "dateSince": "동기화 시작일",
     "days": "일",
@@ -133,6 +151,9 @@
     "downloadFailed": "다운로드 작업 시작 실패",
     "downloadInterval": "다운로드 주기 (분)",
     "downloadIntervalPlaceholder": "분 단위 입력",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "서버 시간 기준 6필드 Cron(초 분 시 일 월 요일). 간격 설정보다 우선됨.",
+    "downloadSchedulePlaceholder": "예: 0 0 * * *",
     "downloadScope": "다운로드 전략",
     "downloadScopeDescription": "색인화 및 다운로드할 이메일을 선택하십시오.",
     "downloadStarted": "다운로드 작업 시작됨",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "변경 사항 저장",
+    "scheduleMode": "다운로드 일정",
+    "scheduleModeCron": "Cron 표현식",
+    "scheduleModeDescription": "고정 간격 또는 Cron 표현식으로 다운로드.",
+    "scheduleModeInterval": "고정 간격",
     "selectAccountType": "계정 유형 선택",
     "selectAtLeastOneFolder": "하나 이상의 폴더를 선택하십시오",
     "selectAuthMethod": "인증 방법 선택",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP 포트는 양의 정수여야 합니다",
     "incrementalSyncMustBeAtLeast10": "증분 동기화 간격은 최소 10분 이상이어야 합니다",
     "incrementalSyncMustBeNumber": "증분 동기화 간격은 숫자여야 합니다",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "유효하지 않은 이메일 주소",
     "invalidUrl": "유효하지 않은 URL",
     "passwordMinLength": "비밀번호는 {{min}}자 이상이어야 합니다",
diff --git a/web/src/locales/nl.json b/web/src/locales/nl.json
index 82a7603..22a5ff5 100644
--- a/web/src/locales/nl.json
+++ b/web/src/locales/nl.json
@@ -115,6 +115,24 @@
     "continue": "Doorgaan",
     "createdAt": "Aangemaakt Op",
     "creationFailed": "Aanmaken mislukt, probeer het later opnieuw",
+    "cronAdvanced": "Geavanceerde expressie",
+    "cronDaily": "Dagelijks",
+    "cronDayOfMonth": "Dag van de week",
+    "cronDayOfWeek": "Dag van de week",
+    "cronFrequency": "Frequentie",
+    "cronFriday": "Vrijdag",
+    "cronHour": "Uur",
+    "cronMinute": "Minuut",
+    "cronMonday": "Maandag",
+    "cronMonthly": "Maandelijks",
+    "cronSaturday": "Zaterdag",
+    "cronSimple": "Simpele expressie",
+    "cronSunday": "Zondag",
+    "cronThursday": "Donderdag",
+    "cronTimezoneNote": "Alle tijden zijn server-lokale tijd.",
+    "cronTuesday": "Dinsdag",
+    "cronWednesday": "Woensdag",
+    "cronWeekly": "Wekelijks",
     "dateSelection": "Datumselectie",
     "dateSince": "Datum Sinds",
     "days": "Dagen",
@@ -133,6 +151,9 @@
     "downloadFailed": "Downloadtaak starten mislukt",
     "downloadInterval": "Download-interval (minuten)",
     "downloadIntervalPlaceholder": "Voer minuten in",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "6-velds Cron (sec min uur dag maand dag-week) in servertijd. Overschrijft interval.",
+    "downloadSchedulePlaceholder": "bijv. 0 0 * * *",
     "downloadScope": "Downloadstrategie",
     "downloadScopeDescription": "Kies welke e-mails moeten worden geïndexeerd en gedownload.",
     "downloadStarted": "Downloadtaak gestart",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Wijzigingen opslaan",
+    "scheduleMode": "Downloadschema",
+    "scheduleModeCron": "Cron-expressie",
+    "scheduleModeDescription": "Downloaden via vaste intervallen o f Cron-expressies.",
+    "scheduleModeInterval": "Vast interval",
     "selectAccountType": "Selecteer accounttype",
     "selectAtLeastOneFolder": "Selecteer alstublieft ten minste één map",
     "selectAuthMethod": "Selecteer een authenticatiemethode",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP poort moet een positief geheel getal zijn",
     "incrementalSyncMustBeAtLeast10": "Incrementaal sync interval moet ten minste 10 minuten zijn",
     "incrementalSyncMustBeNumber": "Incrementaal sync interval moet een nummer zijn",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Ongeldig e-mailadres",
     "invalidUrl": "Ongeldige URL",
     "passwordMinLength": "Wachtwoord moet ten minste {{min}} tekens lang zijn",
diff --git a/web/src/locales/no.json b/web/src/locales/no.json
index 2f5adc3..b756b80 100644
--- a/web/src/locales/no.json
+++ b/web/src/locales/no.json
@@ -115,6 +115,24 @@
     "continue": "Fortsett",
     "createdAt": "Opprettet",
     "creationFailed": "Opprettelse mislyktes, prøv igjen senere",
+    "cronAdvanced": "Avansert uttrykk",
+    "cronDaily": "Daglig",
+    "cronDayOfMonth": "Ugedag",
+    "cronDayOfWeek": "Ugedag",
+    "cronFrequency": "Frekvens",
+    "cronFriday": "Fredag",
+    "cronHour": "Time",
+    "cronMinute": "Minutt",
+    "cronMonday": "Mandag",
+    "cronMonthly": "Månedlig",
+    "cronSaturday": "Lørdag",
+    "cronSimple": "Enkelt uttrykk",
+    "cronSunday": "Søndag",
+    "cronThursday": "Torsdag",
+    "cronTimezoneNote": "Alle klokkeslett er serverens lokaltid.",
+    "cronTuesday": "Tirsdag",
+    "cronWednesday": "Onsdag",
+    "cronWeekly": "Ukentlig",
     "dateSelection": "Datovalg",
     "dateSince": "Dato siden",
     "days": "Dager",
@@ -133,6 +151,9 @@
     "downloadFailed": "Kunne ikke starte nedlastingsoppgave",
     "downloadInterval": "Nedlastingsintervall (minutter)",
     "downloadIntervalPlaceholder": "Skriv inn minutter",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "6-felts Cron (sek min time dag mdr ukedag) i servertid. Overstyrer intervall.",
+    "downloadSchedulePlaceholder": "f.eks.: 0 0 * * *",
     "downloadScope": "Nedlastingsstrategi",
     "downloadScopeDescription": "Velg hvilke e-poster som skal indekseres og lastes ned.",
     "downloadStarted": "Nedlastingsoppgave startet",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Lagre endringer",
+    "scheduleMode": "Nedlastingsplan",
+    "scheduleModeCron": "Cron-uttrykk",
+    "scheduleModeDescription": "Nedlasting med faste intervaller eller Cron-uttrykk.",
+    "scheduleModeInterval": "Fast intervall",
     "selectAccountType": "Velg kontotype",
     "selectAtLeastOneFolder": "Vennligst velg minst én mappe",
     "selectAuthMethod": "Velg en autentiseringsmetode",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP-port må være et positivt heltall",
     "incrementalSyncMustBeAtLeast10": "Intervall for inkrementell synkronisering må være minst 10 minutter",
     "incrementalSyncMustBeNumber": "Intervall for inkrementell synkronisering må være et tall",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Ugyldig e-postadresse",
     "invalidUrl": "Ugyldig URL",
     "passwordMinLength": "Passordet må være minst {{min}} tegn langt",
diff --git a/web/src/locales/pl.json b/web/src/locales/pl.json
index 43e6f65..1b9c5ac 100644
--- a/web/src/locales/pl.json
+++ b/web/src/locales/pl.json
@@ -115,6 +115,24 @@
     "continue": "Kontynuj",
     "createdAt": "Utworzono",
     "creationFailed": "Bład tworzenia, spróbuj później",
+    "cronAdvanced": "Zaawansowane wyrażenie",
+    "cronDaily": "Codziennie",
+    "cronDayOfMonth": "Dzień tygodnia",
+    "cronDayOfWeek": "Dzień tygodnia",
+    "cronFrequency": "Częstotliwość",
+    "cronFriday": "Piątek",
+    "cronHour": "Godzina",
+    "cronMinute": "Minuta",
+    "cronMonday": "Poniedziałek",
+    "cronMonthly": "Co miesiąc",
+    "cronSaturday": "Sobota",
+    "cronSimple": "Proste wyrażenie",
+    "cronSunday": "Niedziela",
+    "cronThursday": "Czwartek",
+    "cronTimezoneNote": "Czas według lokalnej strefy serwera.",
+    "cronTuesday": "Wtorek",
+    "cronWednesday": "Środa",
+    "cronWeekly": "Co tydzień",
     "dateSelection": "Zaznaczenie daty",
     "dateSince": "Od kiedy",
     "days": "Dni",
@@ -133,6 +151,9 @@
     "downloadFailed": "Nie udało się uruchomić zadania pobierania",
     "downloadInterval": "Cykl pobierania (minuty)",
     "downloadIntervalPlaceholder": "Wprowadź minuty",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "6-polowy Cron (sek min godz dz msc dz-tyg) w czasie serwera. Nadpisuje interwał.",
+    "downloadSchedulePlaceholder": "np. 0 0 * * *",
     "downloadScope": "Strategia pobierania",
     "downloadScopeDescription": "Wybierz, które wiadomości e-mail mają być indeksowane i pobierane.",
     "downloadStarted": "Uruchomiono zadanie pobierania",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Zapisz zmiany",
+    "scheduleMode": "Harmonogram pobierania",
+    "scheduleModeCron": "Wyrażenie Cron",
+    "scheduleModeDescription": "Pobieranie w stałych odstępach lub przez wyrażenia Cron.",
+    "scheduleModeInterval": "Stały odstęp",
     "selectAccountType": "Wybierz typ konta",
     "selectAtLeastOneFolder": "Wybierz co najmniej jeden folder",
     "selectAuthMethod": "Zaznacz metodę uwierzytelniania IMAP",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "Port IMAP musi być liczbą całkowitą dodatnią",
     "incrementalSyncMustBeAtLeast10": "Przyrostowy interwał synchronizacji musi wynosić co najmniej 10 minut",
     "incrementalSyncMustBeNumber": "Przyrostowy interwał synchronizacji musi być liczbą",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Niewłaściwy adres email",
     "invalidUrl": "Niewłaściwy URL",
     "passwordMinLength": "Hasło musi posiadać conajmniej {{min}} znaków",
diff --git a/web/src/locales/pt.json b/web/src/locales/pt.json
index 7de4c29..161197a 100644
--- a/web/src/locales/pt.json
+++ b/web/src/locales/pt.json
@@ -115,6 +115,24 @@
     "continue": "Continuar",
     "createdAt": "Criado Em",
     "creationFailed": "Falha na criação, por favor, tente novamente mais tarde.",
+    "cronAdvanced": "Expressão avançada",
+    "cronDaily": "Diariamente",
+    "cronDayOfMonth": "Dia da semana",
+    "cronDayOfWeek": "Dia da semana",
+    "cronFrequency": "Frequência",
+    "cronFriday": "Sexta-feira",
+    "cronHour": "Hora",
+    "cronMinute": "Minuto",
+    "cronMonday": "Segunda-feira",
+    "cronMonthly": "Mensalmente",
+    "cronSaturday": "Sábado",
+    "cronSimple": "Expressão simples",
+    "cronSunday": "Domingo",
+    "cronThursday": "Quinta-feira",
+    "cronTimezoneNote": "Horários no fuso horário do servidor.",
+    "cronTuesday": "Terça-feira",
+    "cronWednesday": "Quarta-feira",
+    "cronWeekly": "Semanalmente",
     "dateSelection": "Seleção de Data",
     "dateSince": "Data de Início da Sincronização",
     "days": "Dias",
@@ -133,6 +151,9 @@
     "downloadFailed": "Falha ao iniciar tarefa de download",
     "downloadInterval": "Intervalo de download (minutos)",
     "downloadIntervalPlaceholder": "Insira os minutos",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "Cron de 6 campos (seg min hora dia mês dia-sem) na hora do servidor. Substitui o intervalo.",
+    "downloadSchedulePlaceholder": "ex: 0 0 * * *",
     "downloadScope": "Estratégia de download",
     "downloadScopeDescription": "Escolha quais e-mails devem ser indexados e baixados.",
     "downloadStarted": "Tarefa de download iniciada",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Salvar Alterações",
+    "scheduleMode": "Agendamento de download",
+    "scheduleModeCron": "Expressão Cron",
+    "scheduleModeDescription": "Download por intervalos fixos ou expressões Cron.",
+    "scheduleModeInterval": "Intervalo fixo",
     "selectAccountType": "Selecionar tipo de conta",
     "selectAtLeastOneFolder": "Por favor, selecione pelo menos uma pasta",
     "selectAuthMethod": "Selecionar Método de Autenticação",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "A Porta IMAP deve ser um número inteiro positivo",
     "incrementalSyncMustBeAtLeast10": "O Intervalo de Sincronização Incremental deve ser de pelo menos 10 minutos",
     "incrementalSyncMustBeNumber": "O Intervalo de Sincronização Incremental deve ser um número",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Endereço de email inválido",
     "invalidUrl": "URL inválido",
     "passwordMinLength": "A senha deve ter pelo menos {{min}} caracteres",
diff --git a/web/src/locales/ru.json b/web/src/locales/ru.json
index 9b1169d..5acaf3f 100644
--- a/web/src/locales/ru.json
+++ b/web/src/locales/ru.json
@@ -115,6 +115,24 @@
     "continue": "Продолжить",
     "createdAt": "Создано",
     "creationFailed": "Ошибка создания, попробуйте позже",
+    "cronAdvanced": "Расширенное выражение",
+    "cronDaily": "Ежедневно",
+    "cronDayOfMonth": "День недели",
+    "cronDayOfWeek": "День недели",
+    "cronFrequency": "Частота",
+    "cronFriday": "Пятница",
+    "cronHour": "Час",
+    "cronMinute": "Минута",
+    "cronMonday": "Понедельник",
+    "cronMonthly": "Ежемесячно",
+    "cronSaturday": "Суббота",
+    "cronSimple": "Простое выражение",
+    "cronSunday": "Воскресенье",
+    "cronThursday": "Четверг",
+    "cronTimezoneNote": "Время по местному часовому поясу сервера.",
+    "cronTuesday": "Вторник",
+    "cronWednesday": "Среда",
+    "cronWeekly": "Еженедельно",
     "dateSelection": "Выбор даты",
     "dateSince": "Дата с",
     "days": "Дни",
@@ -133,6 +151,9 @@
     "downloadFailed": "Не удалось запустить задачу загрузки",
     "downloadInterval": "Интервал загрузки (мин.)",
     "downloadIntervalPlaceholder": "Введите минуты",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "6-польный Cron (сек мин час день мес день-нед) по времени сервера. Меняет интервал.",
+    "downloadSchedulePlaceholder": "напр., 0 0 * * *",
     "downloadScope": "Стратегия загрузки",
     "downloadScopeDescription": "Выберите, какие электронные письма должны быть проиндексированы и скачаны.",
     "downloadStarted": "Задача загрузки запущена",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Сохранить изменения",
+    "scheduleMode": "Расписание загрузки",
+    "scheduleModeCron": "Выражение Cron",
+    "scheduleModeDescription": "Загрузка с фиксированным интервалом или по Cron.",
+    "scheduleModeInterval": "Фиксированный интервал",
     "selectAccountType": "Выберите тип аккаунта",
     "selectAtLeastOneFolder": "Пожалуйста, выберите хотя бы одну папку",
     "selectAuthMethod": "Выберите метод авторизации",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP порт должен быть положительным целым числом",
     "incrementalSyncMustBeAtLeast10": "Интервал инкрементальной синхронизации должен быть не менее 10 минут",
     "incrementalSyncMustBeNumber": "Интервал инкрементальной синхронизации должен быть числом",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Неверный адрес электронной почты",
     "invalidUrl": "Неверный URL",
     "passwordMinLength": "Пароль должен быть не менее {{min}} символов",
diff --git a/web/src/locales/sv.json b/web/src/locales/sv.json
index 50a4c48..bc0ebb5 100644
--- a/web/src/locales/sv.json
+++ b/web/src/locales/sv.json
@@ -115,6 +115,24 @@
     "continue": "Fortsätt",
     "createdAt": "Skapad",
     "creationFailed": "Skapande misslyckades, försök igen senare",
+    "cronAdvanced": "Avancerat uttryck",
+    "cronDaily": "Dagligen",
+    "cronDayOfMonth": "Veckodag",
+    "cronDayOfWeek": "Veckodag",
+    "cronFrequency": "Frekvens",
+    "cronFriday": "Fredag",
+    "cronHour": "Timme",
+    "cronMinute": "Minut",
+    "cronMonday": "Måndag",
+    "cronMonthly": "Månadsvis",
+    "cronSaturday": "Lördag",
+    "cronSimple": "Enkelt uttryck",
+    "cronSunday": "Söndag",
+    "cronThursday": "Torsdag",
+    "cronTimezoneNote": "Alla tider visas i serverns lokaltid.",
+    "cronTuesday": "Tisdag",
+    "cronWednesday": "Onsdag",
+    "cronWeekly": "Veckovis",
     "dateSelection": "Datumsval",
     "dateSince": "Datum från",
     "days": "Dagar",
@@ -133,6 +151,9 @@
     "downloadFailed": "Misslyckades med att starta hämtningsuppgift",
     "downloadInterval": "Nedladdningsintervall (minuter)",
     "downloadIntervalPlaceholder": "Ange minuter",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "6-fälts Cron (sek min tim dag mån veckodag) i servertid. Ersätter intervall.",
+    "downloadSchedulePlaceholder": "t.ex. 0 0 * * *",
     "downloadScope": "Nedladdningsstrategi",
     "downloadScopeDescription": "Välj vilka e-postmeddelanden som ska indexeras och laddas ner.",
     "downloadStarted": "Hämtningsuppgift startad",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "Spara ändringar",
+    "scheduleMode": "Hämtningsschema",
+    "scheduleModeCron": "Cron-uttryck",
+    "scheduleModeDescription": "Hämta med fasta intervall eller Cron-uttryck.",
+    "scheduleModeInterval": "Fast intervall",
     "selectAccountType": "Välj kontotyp",
     "selectAtLeastOneFolder": "Vänligen välj minst en mapp",
     "selectAuthMethod": "Välj en autentiseringsmetod",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP-port måste vara ett positivt heltal",
     "incrementalSyncMustBeAtLeast10": "Intervall för inkrementell synkronisering måste vara minst 10 minuter",
     "incrementalSyncMustBeNumber": "Intervall för inkrementell synkronisering måste vara ett tal",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "Ogiltig e-postadress",
     "invalidUrl": "Ogiltig URL",
     "passwordMinLength": "Lösenordet måste vara minst {{min}} tecken långt",
diff --git a/web/src/locales/zh-tw.json b/web/src/locales/zh-tw.json
index 0c3271b..fbc5d33 100644
--- a/web/src/locales/zh-tw.json
+++ b/web/src/locales/zh-tw.json
@@ -115,6 +115,24 @@
     "continue": "繼續",
     "createdAt": "建立時間",
     "creationFailed": "建立失敗，請稍後再試。",
+    "cronAdvanced": "高級表達式",
+    "cronDaily": "每天",
+    "cronDayOfMonth": "星期",
+    "cronDayOfWeek": "星期",
+    "cronFrequency": "頻率",
+    "cronFriday": "星期五",
+    "cronHour": "小時",
+    "cronMinute": "分鐘",
+    "cronMonday": "星期一",
+    "cronMonthly": "每月",
+    "cronSaturday": "星期六",
+    "cronSimple": "简易表達式",
+    "cronSunday": "星期日",
+    "cronThursday": "星期四",
+    "cronTimezoneNote": "所有時間均使用伺服器在地時區。",
+    "cronTuesday": "星期二",
+    "cronWednesday": "星期三",
+    "cronWeekly": "每周",
     "dateSelection": "日期選擇",
     "dateSince": "同步起始日期",
     "days": "天",
@@ -133,6 +151,9 @@
     "downloadFailed": "啟動下載任務失敗",
     "downloadInterval": "下載週期 (分鐘)",
     "downloadIntervalPlaceholder": "請輸入分鐘數",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "伺服器時間的 6 位 Cron 表達式（秒分時日月週），提供時覆蓋間隔設定。",
+    "downloadSchedulePlaceholder": "例如：0 0 * * *",
     "downloadScope": "下載策略",
     "downloadScopeDescription": "選擇哪些郵件應被索引和下載。",
     "downloadStarted": "下載任務已啟動",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "儲存變更",
+    "scheduleMode": "下載排程",
+    "scheduleModeCron": "Cron 表達式",
+    "scheduleModeDescription": "設定固定間隔或 Cron 表達式下載郵件。",
+    "scheduleModeInterval": "固定間隔",
     "selectAccountType": "選擇郵件帳戶類型",
     "selectAtLeastOneFolder": "請至少選擇一個資料夾",
     "selectAuthMethod": "選擇驗證方法",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP 連接埠必須是正整數",
     "incrementalSyncMustBeAtLeast10": "增量同步間隔必須至少為 10 分鐘",
     "incrementalSyncMustBeNumber": "增量同步間隔必須是數字",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "無效的電子郵件地址",
     "invalidUrl": "無效的網址",
     "passwordMinLength": "密碼長度必須至少 {{min}} 個字元",
diff --git a/web/src/locales/zh.json b/web/src/locales/zh.json
index 9b71302..ca170d5 100644
--- a/web/src/locales/zh.json
+++ b/web/src/locales/zh.json
@@ -115,6 +115,24 @@
     "continue": "继续",
     "createdAt": "创建时间",
     "creationFailed": "创建失败，请稍后重试",
+    "cronAdvanced": "高级表达式",
+    "cronDaily": "每天",
+    "cronDayOfMonth": "星期",
+    "cronDayOfWeek": "星期",
+    "cronFrequency": "频率",
+    "cronFriday": "星期五",
+    "cronHour": "小时",
+    "cronMinute": "分钟",
+    "cronMonday": "星期一",
+    "cronMonthly": "每月",
+    "cronSaturday": "星期六",
+    "cronSimple": "简易表达式",
+    "cronSunday": "星期日",
+    "cronThursday": "星期四",
+    "cronTimezoneNote": "所有时间均使用服务器本地时区。",
+    "cronTuesday": "星期二",
+    "cronWednesday": "星期三",
+    "cronWeekly": "每周",
     "dateSelection": "日期选择",
     "dateSince": "起始日期",
     "days": "天",
@@ -133,6 +151,9 @@
     "downloadFailed": "启动下载任务失败",
     "downloadInterval": "下载周期 (分钟)",
     "downloadIntervalPlaceholder": "请输入分钟数",
+    "downloadSchedule": "Cron Schedule",
+    "downloadScheduleDescription": "服务器时间的 6 位 Cron 表达式（秒分时日月周），提供时覆盖间隔设置。",
+    "downloadSchedulePlaceholder": "例如：0 0 * * *",
     "downloadScope": "下载策略",
     "downloadScopeDescription": "选择哪些邮件应被索引和下载。",
     "downloadStarted": "下载任务已启动",
@@ -247,6 +268,10 @@
       }
     },
     "saveChanges": "保存更改",
+    "scheduleMode": "下载调度",
+    "scheduleModeCron": "Cron 表达式",
+    "scheduleModeDescription": "设置固定间隔或 Cron 表达式下载邮件。",
+    "scheduleModeInterval": "固定间隔",
     "selectAccountType": "选择邮件账户类型",
     "selectAtLeastOneFolder": "请至少选择一个文件夹",
     "selectAuthMethod": "选择认证方法",
@@ -1658,6 +1683,7 @@
     "imapPortMustBePositive": "IMAP 端口必须是正整数",
     "incrementalSyncMustBeAtLeast10": "增量同步间隔必须至少为 10 分钟",
     "incrementalSyncMustBeNumber": "增量同步间隔必须是数字",
+    "invalidCronExpression": "Invalid cron expression. Must be 6 fields: second minute hour day-of-month month day-of-week (e.g. '0 0 0 * * *')",
     "invalidEmail": "无效的电子邮件地址",
     "invalidUrl": "无效的 URL",
     "passwordMinLength": "密码长度至少为 {{min}} 个字符",